US4228893A - Inhibition of paint-product skin formation on the interior surface of a paint vessel lid - Google Patents
Inhibition of paint-product skin formation on the interior surface of a paint vessel lid Download PDFInfo
- Publication number
- US4228893A US4228893A US06/025,710 US2571079A US4228893A US 4228893 A US4228893 A US 4228893A US 2571079 A US2571079 A US 2571079A US 4228893 A US4228893 A US 4228893A
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- United States
- Prior art keywords
- paint composition
- barrier material
- vessel
- paint
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003973 paint Substances 0.000 title claims abstract description 93
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 14
- 230000005764 inhibitory process Effects 0.000 title description 2
- 239000000203 mixture Substances 0.000 claims abstract description 122
- 239000000463 material Substances 0.000 claims abstract description 69
- 230000004888 barrier function Effects 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 230000001627 detrimental effect Effects 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 239000004816 latex Substances 0.000 claims description 7
- 229920000126 latex Polymers 0.000 claims description 7
- 239000003755 preservative agent Substances 0.000 claims description 6
- 230000002335 preservative effect Effects 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 5
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims 4
- 229940071826 hydroxyethyl cellulose Drugs 0.000 claims 2
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000007792 addition Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- JCIIKRHCWVHVFF-UHFFFAOYSA-N 1,2,4-thiadiazol-5-amine;hydrochloride Chemical compound Cl.NC1=NC=NS1 JCIIKRHCWVHVFF-UHFFFAOYSA-N 0.000 description 4
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 description 4
- 239000013530 defoamer Substances 0.000 description 4
- 239000003995 emulsifying agent Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 229940096826 phenylmercuric acetate Drugs 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 238000012956 testing procedure Methods 0.000 description 3
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 2
- 229920004897 Triton X-45 Polymers 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- JYCQQPHGFMYQCF-UHFFFAOYSA-N 4-tert-Octylphenol monoethoxylate Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCO)C=C1 JYCQQPHGFMYQCF-UHFFFAOYSA-N 0.000 description 1
- 229920004890 Triton X-100 Polymers 0.000 description 1
- 239000013504 Triton X-100 Substances 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- IPZJQDSFZGZEOY-UHFFFAOYSA-N dimethylmethylene Chemical compound C[C]C IPZJQDSFZGZEOY-UHFFFAOYSA-N 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/46—Anti-skinning agents
Definitions
- the subject of this invention is a method to inhibit paint-product skin formation on the interior surface of the lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile.
- Paint compositions generally contain a volatile portion which volatilizes into the atmosphere upon application of the paint composition to a substrate, thereby essentially coating the substrate with the paint composition minus its volatile portion.
- water is the volatile portion which volatilizes from the composition after application of the paint composition to the substrate.
- paint-product skin is herein defined as a coating of the paint composition minus at least a part of the quantity of the originally-present volatile portion of said paint composition. Specifically, tipping or inverting the closed upright vessel from its upright position causes the paint composition in the vessel to contact the interior surface of the lid. Returning the vessel to its upright position results in a coating of the paint composition being retained on this interior surface.
- this coating which is similar in thickness to a normally applied coating in a painting process, on the interior surface of the lid along with the air space discussed above acts to cause a paint-product skin to form on the interior surface of the lid since at least a part of the volatile portion of the paint composition volatilizes into the air space.
- the paint composition is a latex base containing water
- this water tends to volatilize from the coating on the interior surface of the lid and into the air space.
- a paint-product skin forms on the interior surface, said skin ranging from a hard, dry film to a soft gelatinous layer.
- This paint-product skin can later break loose and fall into the paint composition, causing lumps, grit and the like in the composition which will cause surface irregularities and constitute a form of seeding when the composition is applied to a substrate to be coated.
- the subject of the invention disclosed and claimed herein is a method to inhibit the formation of a paint-product skin on the interior surface of a lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile, the method comprising:
- barrier material being characterized as
- Delivery of the barrier material can be accomplished prior to, simultaneously with, or after delivery of the paint composition to the vessel.
- the barrier material is delivered after composition delivery to the vessel is completed.
- Composition delivery as well as barrier material delivery can be accomplished by hand, or can be accomplished by the addition of a barrier-material delivery means to apparatus already appropriate for vessel filling, all as known in the art.
- Vessels employed to house the paint composition and the barrier material can be constructed of any material suitable for containment of the paint composition, and include metal cans whose interior surfaces may or may not be pretreated, all as known in the art.
- the lid of the vessel should securely close the vessel.
- barrier material Any compound, composition, or the like whose properties, which would be recognized by a skilled artisan, meet the above-described characteristics of the barrier material can be employed as said barrier material.
- a sufficient quantity of the barrier material must be delivered to the vessel so that the entire top of the paint composition in the vessel is covered with a layer of said material.
- the barrier material must not effect seeding at its interface with the paint composition.
- thickness of the layer should be from about one inch (2.54 centimeters) to about three inches (7.62 centimeters). However, it is to be understood that a lesser or greater thickness can be employed, depending on particular requirements of a particular paint composition and/or anticipated handling of the vessel.
- the barrier material must, of course, be less dense than the paint composition to permit said barrier material to float on the top of the composition. Additionally, to reduce the possibility of premature mixing of the barrier material with the paint composition during normal shipping and handling of the vessel, the barrier material can be, and is preferably, more viscous than the paint composition to thereby preserve a layer configuration. Conversely, however, the viscosity should not be so great to prevent mixing with the paint when such mixing is desired and physically performed as with a commercial agitator mixer commonly employed in the preparation for delivery of a paint composition to an ultimate user. In regard to mixing the barrier material with the paint composition, the barrier material must be compatible with the several components comprising the paint composition to yield a final paint composition upon mixing wherein the barrier material becomes a mixed component thereof and does not produce a detrimental effect to the utility of the paint composition.
- an air space is present between the interior surface of the lid of a closed upright vessel and the top of the paint composition within the vessel. It is into this air space that at least a part of the volatile portion of the paint composition volatilizes, leaving a paint-product skin on the interior surface of the lid.
- an air space is also present in the closed upright vessel, said air space being situated between the interior surface of the vessel's lid and the top of the barrier material.
- the barrier material comes into contact with the interior surface of the lid and coats this surface before the paint composition can reach said surface.
- the following water base latex paint was prepared in two parts.
- a barrier material was prepared by combining 1.8 pounds (816.5 g) of hydroxyethyl cellulose (250 MR type, Hercules Co.), 75.0 pounds (34.02 kg) of water, 10 pounds (4.54 kg) of ethylene glycol, and 1.0 pound (453.6 g) of wetting agent (Tamol 731®, Rohm & Haas Co.). To this mixture was added 0.75 pound (340.2 g) of 2-amino-2-methyl propanol and 0.25 pound (113.4 g) of phenyl mercuric acetate. The former acts to remove an apparent coating from the hydroxeythyl cellulose surface, while the latter is a preservative.
- water is the volatile portion of the barrier material, and, likewise, the volatile portion of the paint composition.
- the barrier material has a density less than and a viscosity greater than the paint composition.
- Ten liquid ounces (295.7 ml), producing a thickness of about one inch (2.54 cm) in the above-identified gallon container, of the barrier material was delivered to the gallon container already housing the paint composition to cover said composition, a tight-fitting lid was placed on the container, and the container was subjected to the following testing procedure.
- the container lid was examined for skinning.
- a control paint composition being the same contents of the barrier-containing container but with the barrier material thoroughly mixed therein, was subjected to the same cyclic testing procedure.
- the control container had paint-product skin formation on the interior surface of the lid after one cycle; the container housing the paint composition with covering barrier material exhibited no paint-product skin formation throughout the five complete cycles.
- the container housing the paint composition with barrier material was shaken sufficiently to mix the barrier material with the composition. The resulting mixture remained mixed and was applied to a workpiece with no detrimental effects.
- a second water-base latex paint was prepared in two parts, as follows:
- a barrier material was prepared by combining 4.75 pounds (2.16 kg) of a cellulose modified montmorillionite clay having a density of 1.8 gm/cm 3 and readily dispersible under high shear conditions at 75° F. (available as Bentone LT®, NL Industries, Inc., Hightstown, N.J.; described in NL Industries Product Description DS-174) with 185.25 pounds (84.03 kg) of water.
- Bentone LT® NL Industries, Inc., Hightstown, N.J.
- water the volatile portion of the barrier material, comprises 97+ percent of said barrier material.
- water is the volatile portion of the paint composition.
- the barrier material has a density less than and a viscosity greater than the paint composition.
- Example 1 liquid ounces (863.4 ml), producing a thickness of about 3 inches (7.62 cm) in the above-identified gallon container, of the barrier material was delivered to the gallon container already housing the paint composition to cover said composition, a tight-fitting lid was placed on the container, and the container was subjected to the five cycles described in Example 1.
- a control paint composition being the same contents of the barrier-containing container of this Example but with the barrier material thoroughly mixed therein, was subjected to the same cyclic testing procedure.
- the control container had paint-product skin formation on the interior surface of the lid after one cycle; the container housing the paint composition with covering barrier material exhibited no paint-product skin formation throughout the five complete cycles.
- the container housing the paint composition and barrier material was shaken to mix the barrier material with the composition. The resulting mixture remained mixed and was applied without detrimental effects to a workpiece.
- the employment of a barrier material as herein described and claimed successfully inhibits paint-product skin formation on the interior surface of the lid of a vessel housing a paint composition.
- the components of the barrier material can be those which are normally present in a usable paint composition.
- an appropriate portion of components which meet the physical criteria set forth herein for the barrier material can be initially withheld during initial blending of the paint composition. These components so withheld can then function as the barrier material when utilized as herein described.
Abstract
Disclosed is a method to inhibit the formation of a paint-product skin on the interior surface of the lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile. The method comprises delivering said paint composition to an upright, open vessel closeable at its top with a lid; delivering a sufficient quantity of a barrier material to the open vessel to provide a covering layer of the barrier material for the top of the paint composition; and closing the open vessel at its top with a lid. The barrier material is characterized as (1) less dense than the paint composition; (2) containing a volatile portion whose volatility is at least substantially equivalent to the volatility of the volatile portion of the paint composition; and (3) sufficiently compatible with the paint composition to become a mixed non-detrimental component thereof upon adequate mixing therewith.
Description
The subject of this invention is a method to inhibit paint-product skin formation on the interior surface of the lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile.
Paint compositions generally contain a volatile portion which volatilizes into the atmosphere upon application of the paint composition to a substrate, thereby essentially coating the substrate with the paint composition minus its volatile portion. In latex paint compositions, for example, water is the volatile portion which volatilizes from the composition after application of the paint composition to the substrate. Providing such a paint composition to an ultimate user is generally accomplished by supplying the composition in a closed upright vessel, usually a metal can, having a top lid which is removable to permit access to said vessel. However,when the composition is initially delivered to the vessel, said vessel may not be completely filled in order to allow a later addition of pigment formulations to accommodate ultimate color needs. Further, even when later additions are not contemplated and the vessel is initially completely filled, a settling effect occurs over time to yield a vessel which, likewise, is not completely filled. In either case, therefore, an air space results between the top of the paint composition and the interior surface of the vessel lid.
Normal handling of this vessel during shipment and storage of the paint composition therein can easily initiate the formation of a paint-product skin on the interior surface of the vessel lid. The term "paint-product skin" is herein defined as a coating of the paint composition minus at least a part of the quantity of the originally-present volatile portion of said paint composition. Specifically, tipping or inverting the closed upright vessel from its upright position causes the paint composition in the vessel to contact the interior surface of the lid. Returning the vessel to its upright position results in a coating of the paint composition being retained on this interior surface. The combination of this coating, which is similar in thickness to a normally applied coating in a painting process, on the interior surface of the lid along with the air space discussed above acts to cause a paint-product skin to form on the interior surface of the lid since at least a part of the volatile portion of the paint composition volatilizes into the air space. In particular, if the paint composition is a latex base containing water, this water tends to volatilize from the coating on the interior surface of the lid and into the air space. When water migrates in this manner from the coating, a paint-product skin forms on the interior surface, said skin ranging from a hard, dry film to a soft gelatinous layer. This paint-product skin can later break loose and fall into the paint composition, causing lumps, grit and the like in the composition which will cause surface irregularities and constitute a form of seeding when the composition is applied to a substrate to be coated.
It is therefore an object of the instant invention to inhibit paint-product skin formation on the interior surface of the lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile, thereby eliminating seeding and consequent irregularities upon application of the composition to a substrate. It is a further object of the invention to conveniently inhibit said skin formation from a paint composition wherein the volatile portion of the composition is water as in a latex paint composition. These and other objects will become apparent within the body of this application.
The subject of the invention disclosed and claimed herein is a method to inhibit the formation of a paint-product skin on the interior surface of a lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile, the method comprising:
a. delivering said paint composition to an upright open vessel closeable at its top with a lid;
b. delivering a sufficient quantity of a barrier material to the open vessel to provide a covering layer of the barrier material for the top of the paint composition, said barrier material being characterized as
1. less dense than the paint composition;
2.containing a volatile portion whose volatility is at least substantially equivalent to the volatility of the volatile portion of the paint composition;
3. sufficiently compatible with the paint composition to produce no detrimental effects therein and to become a mixed non-detrimental component thereof upon adequate mixing therewith; and
4. more viscous than the paint composition; and
c. closing the open vessel at its top with a lid.
Delivery of the barrier material can be accomplished prior to, simultaneously with, or after delivery of the paint composition to the vessel. Preferably, the barrier material is delivered after composition delivery to the vessel is completed. Composition delivery as well as barrier material delivery can be accomplished by hand, or can be accomplished by the addition of a barrier-material delivery means to apparatus already appropriate for vessel filling, all as known in the art. Vessels employed to house the paint composition and the barrier material can be constructed of any material suitable for containment of the paint composition, and include metal cans whose interior surfaces may or may not be pretreated, all as known in the art. The lid of the vessel should securely close the vessel.
Any compound, composition, or the like whose properties, which would be recognized by a skilled artisan, meet the above-described characteristics of the barrier material can be employed as said barrier material. As recited above, a sufficient quantity of the barrier material must be delivered to the vessel so that the entire top of the paint composition in the vessel is covered with a layer of said material. The barrier material must not effect seeding at its interface with the paint composition. Preferably, thickness of the layer should be from about one inch (2.54 centimeters) to about three inches (7.62 centimeters). However, it is to be understood that a lesser or greater thickness can be employed, depending on particular requirements of a particular paint composition and/or anticipated handling of the vessel. The barrier material must, of course, be less dense than the paint composition to permit said barrier material to float on the top of the composition. Additionally, to reduce the possibility of premature mixing of the barrier material with the paint composition during normal shipping and handling of the vessel, the barrier material can be, and is preferably, more viscous than the paint composition to thereby preserve a layer configuration. Conversely, however, the viscosity should not be so great to prevent mixing with the paint when such mixing is desired and physically performed as with a commercial agitator mixer commonly employed in the preparation for delivery of a paint composition to an ultimate user. In regard to mixing the barrier material with the paint composition, the barrier material must be compatible with the several components comprising the paint composition to yield a final paint composition upon mixing wherein the barrier material becomes a mixed component thereof and does not produce a detrimental effect to the utility of the paint composition.
As earlier related, in prior art packaging an air space is present between the interior surface of the lid of a closed upright vessel and the top of the paint composition within the vessel. It is into this air space that at least a part of the volatile portion of the paint composition volatilizes, leaving a paint-product skin on the interior surface of the lid. In employing the method of the instant invention, an air space is also present in the closed upright vessel, said air space being situated between the interior surface of the vessel's lid and the top of the barrier material. However, on tipping or inverting said vessel, the barrier material comes into contact with the interior surface of the lid and coats this surface before the paint composition can reach said surface. Subsequent return of the vessel to its upright position results in the retention of a coating of barrier material on the interior surface of the lid followed by a coating of the paint composition on said barrier material. This resulting double coating, consisting of barrier material and paint composition, has a combined volatile portion whose magnitude, despite some volatilization thereof into the air space, will not go below the originally present quantity of volatile portion of the paint composition alone, thereby having the effect of enriching the volatile portion of the paint composition coating. In such manner, inhibition of paint-product skin formation on the interior of the lid is accomplished.
In the following Examples all parts and percentages are by weight unless otherwise specified.
The following water base latex paint was prepared in two parts.
Part I
1.8 pounds (816.5 g) of hydroxyethyl cellulose (250 MR type, Hercules Co.) and 3.0 pounds (1.36 kg) of colloidal magnesium aluminum silicate were mixed with 14.0 pounds (6.35 kg) of Texanol® [(CH3)2 CHCO2 CH2 C (CH3)2 CHOHCH(CH3)2, Eastman Co.]and 120.0 pounds (54.43 kg) of water. To this mixture 0.75 pound (340.2 g) of 2 amino-2-methyl propanol and 0.25 pound (113.4 g) of phenyl mercuric acetate were added, the former for pH adjustment and the latter for preservative qualities. 5.00 pounds (2.27 kg) wetting agent [Tamol 731® (sodium salt of polymeric carboxylic acid) Rohm & Hass Co.], 3.0 pounds (1.36 kg) oil-in-water emulsifier [Triton X-100®, Rohm & Hass Co.], and 2.0 pounds (907.2 g) of defoamer [Foamaster S®, Nopco Co.] were then added. The next addition included 10.0 pounds (4.54 kg) of a high-boiling mineral spirit and 1.0 pound (453.6 g) medium HLB (hydrophilic lyophilic balance) emulsifier (Triton X-45®, Rohm & Haas). Finally, 10.0 pounds (4.54 kg) of calcium silicate (Hi-Sil 422®, PPG Industries, Inc.), 25.0 pounds (11.34 kg) of diatomaceous silica (Celite 499®, Johns-Mansville Co.), and 40.0 pounds (18.14 kg) of amorphous silica (Imsil A-25®, Illinois Minerals Co.) were added. The entire mixture was then thoroughly ground on a high speed disperser to produce a smooth paste. After grinding, the paste was reduced with 42.82 pounds (19.42 kg) of water and pumped into a tank containing the composition of Part II.
Part II
310.0 pounds (140.62 kg) of vinyl acrylic emulsion (UCAR 362®, Union Carbide Corp.) containing 55 percent solids was combined with 4.0 pounds (1.81 kg) of defoamer (Foamaster S®, Nopco Co.), 73.0 pounds (33.11 kg) of aluminum silicate slurry at 68 percent solids, and 328. 0 pounds (148.78 kg) of rutile titanium dioxide slurry at 62 percent solids. After the combination of Parts I and II, 118 ounces (3.49 l) of the resulting paint composition was delivered to a cylindrically-shaped gallon container and held for addition of a barrier material.
A barrier material was prepared by combining 1.8 pounds (816.5 g) of hydroxyethyl cellulose (250 MR type, Hercules Co.), 75.0 pounds (34.02 kg) of water, 10 pounds (4.54 kg) of ethylene glycol, and 1.0 pound (453.6 g) of wetting agent (Tamol 731®, Rohm & Haas Co.). To this mixture was added 0.75 pound (340.2 g) of 2-amino-2-methyl propanol and 0.25 pound (113.4 g) of phenyl mercuric acetate. The former acts to remove an apparent coating from the hydroxeythyl cellulose surface, while the latter is a preservative. As is apparent, water is the volatile portion of the barrier material, and, likewise, the volatile portion of the paint composition. The barrier material has a density less than and a viscosity greater than the paint composition. Ten liquid ounces (295.7 ml), producing a thickness of about one inch (2.54 cm) in the above-identified gallon container, of the barrier material was delivered to the gallon container already housing the paint composition to cover said composition, a tight-fitting lid was placed on the container, and the container was subjected to the following testing procedure.
A series of five cycles representing temperature and storage extremes included, per cycle, rolling the container approximately 12 feet (3.66 m), placing the container in a 140° F. room for 18 hours, and finally placing said container in a 40° F. room for 6 hours. At the completion of each of the cycles the container lid was examined for skinning. In an identical container a control paint composition, being the same contents of the barrier-containing container but with the barrier material thoroughly mixed therein, was subjected to the same cyclic testing procedure. The control container had paint-product skin formation on the interior surface of the lid after one cycle; the container housing the paint composition with covering barrier material exhibited no paint-product skin formation throughout the five complete cycles. Upon completion of the five cycles, the container housing the paint composition with barrier material was shaken sufficiently to mix the barrier material with the composition. The resulting mixture remained mixed and was applied to a workpiece with no detrimental effects.
A second water-base latex paint was prepared in two parts, as follows:
Part I
3.0 pounds (1.36 kg) of colloidal magnesium silicate and 2.0 pounds (907.2 g) of defoamer (Foamaster S®, Nopco Co.) were mixed with 144.30 pounds (65.46 kg) of water. To this mixture was added 6.0 pounds (2.72 kg) of wetting agent (Tamol 731®, Rohm & Haas Co.), 3.0 pounds (1.36kg) of oil-in-water emulsifier (Igepal CA-630®, GAF Co.), 14.0 pounds (6.35 kg) of Texanol® [CHCO2 CH2 C(CH3)2 CHOHCH(CH3)2, Eastman Co.], 0.5 pound (226.8 g) phenyl mercuric acetate (preservative), and 0.75 pound (340.2 g) 2-amino-2-methyl propanol (pH adjuster). To this mixture was added 10.0 pounds (4.54 kg) of a high boiling mineral spirit along with 1.0 pound (453.6 g) of medium HLB emulsifier (Triton X-45®, Rohm & Haas Co.). Finally, 10.0 pounds (4.54 kg) of calcium silicate (Hi-Sil 422®, PPG industries, Inc.), 25.0 pounds (11.34 kg) of diatomaceous silica (Celite 499®, Johns-Manville), 220.0 pounds (99.79 kg) titanium dioxide (R-931 type, DuPont Co.), 50.0 pounds (22.68 kg) aluminum silicate (Al-Sil-Ate NC®, Freeport Co.), and 40.0 pounds (18.14 kg) amorphous silica (Imsil A-25®, Illinois Minerals Co.) were added. The entire mixture was thoroughly ground on a high speed disperser to produce a smooth paste which was reduced with 60.0 pounds (27.22 kg) of water and pumped to a tank containing the composition of Part II.
Part II
310.0 pounds (140.62 kg) of vinyl acrylic emulsion (UCAR 362®, Union Carbide Corp.) containing 55 percent solids was combined with 4.0 pounds (1.81 kg) defoamer (Foamaster S®, Nopco Co.) 1.5 pounds (680.4 g) phenyl mercuric acetate (preservative), and 0.75 pound (340.2 g) 2-amino-2-methyl propanol (ph adjuster). 98.8 liquid ounces (2.92 l) of the resulting paint composition was delivered to a cylindrically-shaped gallon container and held for addition of a barrier material.
A barrier material was prepared by combining 4.75 pounds (2.16 kg) of a cellulose modified montmorillionite clay having a density of 1.8 gm/cm3 and readily dispersible under high shear conditions at 75° F. (available as Bentone LT®, NL Industries, Inc., Hightstown, N.J.; described in NL Industries Product Description DS-174) with 185.25 pounds (84.03 kg) of water. As is apparent, water, the volatile portion of the barrier material, comprises 97+ percent of said barrier material. Likewise, water is the volatile portion of the paint composition. The barrier material has a density less than and a viscosity greater than the paint composition.
29.2 liquid ounces (863.4 ml), producing a thickness of about 3 inches (7.62 cm) in the above-identified gallon container, of the barrier material was delivered to the gallon container already housing the paint composition to cover said composition, a tight-fitting lid was placed on the container, and the container was subjected to the five cycles described in Example 1. In an identical container a control paint composition, being the same contents of the barrier-containing container of this Example but with the barrier material thoroughly mixed therein, was subjected to the same cyclic testing procedure. The control container had paint-product skin formation on the interior surface of the lid after one cycle; the container housing the paint composition with covering barrier material exhibited no paint-product skin formation throughout the five complete cycles. As in Example 1, after the five cycles were completed, the container housing the paint composition and barrier material was shaken to mix the barrier material with the composition. The resulting mixture remained mixed and was applied without detrimental effects to a workpiece.
Thus, the employment of a barrier material as herein described and claimed successfully inhibits paint-product skin formation on the interior surface of the lid of a vessel housing a paint composition. As is evident herein, the components of the barrier material can be those which are normally present in a usable paint composition. However, instead of blending all components in the manufacturing process, an appropriate portion of components which meet the physical criteria set forth herein for the barrier material can be initially withheld during initial blending of the paint composition. These components so withheld can then function as the barrier material when utilized as herein described.
Claims (17)
1. A method to inhibit the formation of a paint-product skin on the interior surface of the lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile, the method comprising:
a. delivering said paint composition to an upright open vessel closeable at its top with a lid;
b. delivering a sufficient quantity of a barrier material to the open vessel to provide a covering layer of the barrier material for the top of the paint composition, said barrier material being characterized as
1. less dense than the paint composition:
2. containing a volatile portion whose volatility is at least substantially equivalent to the volatility of the volatile portion of the paint composition;
3. sufficiently compatible with the paint composition to produce no detrimental effects therein and to become a mixed non-detrimental component thereof upon adequate mixing therewith; and
4. more viscous than the paint composition; and
c. closing the open vessel at its top with a lid.
2. A method as claimed in claim 1 wherein the quantity of barrier material delivered provides a covering layer of barrier material from about one inch (2.54 cm) to about three inches (7.62 cm) thick.
3. A method as claimed in claim 1 wherein delivery of the barrier material is performed after delivery of the paint composition.
4. A method as claimed in claim 1 wherein the paint composition is a latex paint composition.
5. A method as claimed in claim 4 wherein the volatile component of the barrier material is water.
6. A method as claimed in claim 5 wherein the water portion of the barrier material is present in an amount of from about 97 percent to about 98 percent by weight.
7. A method as claimed in claim 4 wherein the barrier material comprises an aqueous cellulose modified montmorillionite clay composition.
8. A method as claimed in claim 4 wherein the barrier material comprises an aqueous solution of hydroxy ethyl cellulose and ethylene glycol.
9. A method as claimed in claim 8 wherein the aqueous solution contains a wetting agent and a preservative.
10. A lidded vessel containing a partially volatile paint composition and a layer of barrier material, said layer being disposed between the lid of the vessel and the top of the paint composition and covering said paint composition, the barrier material being characterized as
1. less dense than the paint composition;
2. containing a volatile portion whose volatility is at least substantially equivalent to the volatility of the volatile portion of the paint composition;
3. sufficiently compatible with the paint composition to produce no detrimental effects therein and to become a mixed non-detrimental component thereof upon adequate mixing therewith; and
4. more viscous than the paint composition.
11. The vessel as claimed in claim 10 wherein the layer of barrier material is from about one inch (2.54 cm) to about three inches (7.62 cm) thick.
12. The vessel as claimed in claim 10 wherein the paint composition is a latex paint composition.
13. The vessel as claimed in claim 12 wherein the volatile component of the barrier material is water.
14. The vessel as claimed in claim 13 wherein the water portion of the barrier material is present in an amount of from about 97 percent to about 98 percent by weight.
15. The vessel as claimed in claim 12 wherein the barrier material comprises an aqueous cellulose modified montmorillionite clay composition.
16. The vessel as claimed in claim 12 wherein the barrier material comprises an aqueous solution of hydroxy ethyl cellulose and ethylene glycol.
17. The vessel as claimed in claim 16 wherein the aqueous solution contains a wetting agent and a preservative.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/025,710 US4228893A (en) | 1979-04-02 | 1979-04-02 | Inhibition of paint-product skin formation on the interior surface of a paint vessel lid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/025,710 US4228893A (en) | 1979-04-02 | 1979-04-02 | Inhibition of paint-product skin formation on the interior surface of a paint vessel lid |
Publications (1)
Publication Number | Publication Date |
---|---|
US4228893A true US4228893A (en) | 1980-10-21 |
Family
ID=21827639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/025,710 Expired - Lifetime US4228893A (en) | 1979-04-02 | 1979-04-02 | Inhibition of paint-product skin formation on the interior surface of a paint vessel lid |
Country Status (1)
Country | Link |
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US (1) | US4228893A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6354063B1 (en) * | 2000-03-20 | 2002-03-12 | The Glidden Company | Method of inhibiting non-dispersible paint skin formation inside paint cans of latex paints |
US20060222960A1 (en) * | 1992-11-27 | 2006-10-05 | Dai Nippon Printing Co., Ltd. | Hologram recording sheet, holographic optical element using said sheet, and its production process |
US7259202B1 (en) * | 2003-04-10 | 2007-08-21 | Maureen Soens | Method for pre-treating stencils to ensure paint removal |
US20070231517A1 (en) * | 2006-03-31 | 2007-10-04 | Golownia Robert F | Method of reducing the tendency for water insoluble films to form on the exposed surfaces of containers and articles which are used to contain water borne coatings and article |
US20080210582A1 (en) * | 2007-03-02 | 2008-09-04 | The Sherwin-Williams Company | Inhibition of paint-product skin formation |
US8668087B2 (en) | 2011-12-22 | 2014-03-11 | United States Gypsum Company | Two-phase packaging of ready mix joint compound |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US929610A (en) * | 1906-09-01 | 1909-07-27 | Lilly Co Eli | Commercial package of medicine. |
US2465755A (en) * | 1946-05-23 | 1949-03-29 | Fred K H Levey Co Inc | Ink package having an adjustable sealer |
US2719660A (en) * | 1950-02-10 | 1955-10-04 | John M Ellis | Method of preserving packaged materials |
US2982396A (en) * | 1960-01-29 | 1961-05-02 | Musa M Shihadeh | Packaging unit and process for making same |
US3261457A (en) * | 1964-03-24 | 1966-07-19 | Martin Marietta Corp | Ink package |
US3321070A (en) * | 1964-05-13 | 1967-05-23 | Clifford F Childs | Package for liquid coating material |
US3825111A (en) * | 1971-06-18 | 1974-07-23 | Valspar Corp | Container containing a carbonated product |
-
1979
- 1979-04-02 US US06/025,710 patent/US4228893A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US929610A (en) * | 1906-09-01 | 1909-07-27 | Lilly Co Eli | Commercial package of medicine. |
US2465755A (en) * | 1946-05-23 | 1949-03-29 | Fred K H Levey Co Inc | Ink package having an adjustable sealer |
US2719660A (en) * | 1950-02-10 | 1955-10-04 | John M Ellis | Method of preserving packaged materials |
US2982396A (en) * | 1960-01-29 | 1961-05-02 | Musa M Shihadeh | Packaging unit and process for making same |
US3261457A (en) * | 1964-03-24 | 1966-07-19 | Martin Marietta Corp | Ink package |
US3321070A (en) * | 1964-05-13 | 1967-05-23 | Clifford F Childs | Package for liquid coating material |
US3825111A (en) * | 1971-06-18 | 1974-07-23 | Valspar Corp | Container containing a carbonated product |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060222960A1 (en) * | 1992-11-27 | 2006-10-05 | Dai Nippon Printing Co., Ltd. | Hologram recording sheet, holographic optical element using said sheet, and its production process |
US6354063B1 (en) * | 2000-03-20 | 2002-03-12 | The Glidden Company | Method of inhibiting non-dispersible paint skin formation inside paint cans of latex paints |
US7259202B1 (en) * | 2003-04-10 | 2007-08-21 | Maureen Soens | Method for pre-treating stencils to ensure paint removal |
US20070231517A1 (en) * | 2006-03-31 | 2007-10-04 | Golownia Robert F | Method of reducing the tendency for water insoluble films to form on the exposed surfaces of containers and articles which are used to contain water borne coatings and article |
US20080210582A1 (en) * | 2007-03-02 | 2008-09-04 | The Sherwin-Williams Company | Inhibition of paint-product skin formation |
US8668087B2 (en) | 2011-12-22 | 2014-03-11 | United States Gypsum Company | Two-phase packaging of ready mix joint compound |
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